Valmiki Ramayana Yuddha Kanda Sarga 60 Shloka 16
Original Shlokaसुखंस्वपितिनिश्चिन्तःकालोपहतचेतनः ।।6.60.16।। नवषट् सप्तचाष्टौचमासान् स्वपितिराक्षसः ।
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राक्षसः Rakshasa, कालोपहतचेतनः lost consciousness for long, निश्चिन्तः slumbering at ease, नव nine, सप्त seven, षट् six, अष्टौ eight च and, मासान् months, सुखम् happily, स्वपिति sleeping.
"The Rakshasa, Kumbhakarna, lost consciousness is slumbering at ease and has been sleeping for six to nine months happily."